What is the best bet at this weekend’s Twenty20 finals day at the Rose Bowl?

Each week we pit Guardian readers against the bookmaker Paddy Power
and talkSPORT Breakfast host Ronnie Irani. Paddy Power provides a free £10 bet and will donate the balances to charity after the Community Shield.
The bookie
Kent to defeat Essex 4-6
"Essex struggle out of Chelmsford so Kent are value even at odds on"
The pundit
Robert Key to top score 7-2
"The captain can lead from the front again after scoring 68 last year"